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. Author manuscript; available in PMC: 2015 Jan 22.
Published in final edited form as: Tetrahedron Lett. 2013 Dec 13;55(4):842–844. doi: 10.1016/j.tetlet.2013.12.021

Table 1.

Selected crystallographic data of 5a

Empirical formula C10H16N2O4
Formula weight 228.25
Temperature 150(2) K
Wavelength 0.71073 Å
Crystal system Orthorhombic
Space group P n m a
Unit cell dimensions a = 24.798(2) Å, ϒ= 90°
b = 9.0377(7) Å, ϒ= 90°
c = 5.2093(4) Å, ϒ= 90°
Volume 1167.49(16) Å3
Z 4
Density (calculated) 1.299 Mg/m3
Absorption coefficient 0.101 mm−1
F(000) 488
Crystal size 0.617 × 0.431 × 0.157 mm3